Thats good. The 2GB model is actualy better because it can access the data in the mass storage faster since it uses a memory card, and you can expand it to up to 32GB, but im guessing 2GB is more than enough for you.

When you do get it the 1st thing i suggest you do is set EVERYTHING to be saved in the memory card: Messages, Applications, Themes, and Ngage games especially, it only has 25mb internal memory, and when installing apps and games into the memory card it dumps little bits of their system info and folders into the internal memory, thats what its there for.
Theres no other differences between the 8gb and 2gb besides the memory.